Water Treatment and Recycling
Extreme by Design - Trailer from Kikim Media on Vimeo.
Extreme By Design vividly brings to life one of the most-talked about trends in education and business: design thinking. The film captures the experience of 40 students from Stanford University’s Institute of Design as they apply the design thinking process to create products that may save thousands of lives in Bangladesh, Indonesia, and other developing countries they visit. The student teams, from multi-disciplinary backgrounds, tap creativity they didn’t know they had to tackle seemingly impossible assignments. The class draws on methods from engineering and design, and combines them with ideas from the arts, tools from the social sciences, and insights from the business world. Believing that they can and will make a difference, the students open their hearts and brains and remarkably, almost magically, their products take shape and work.
Activities: Resources:
- Technology Exchange Lab
- Water Filter Challenge(NYSI)
- Hands-On Activity: Water Filtration
- http://pbskids.org/zoom/activities/sci/waterfilter.html
- How to Make a Slow Sand Filter
- WikiHow Filter
- Ten Low-Cost Ways to Treat Water
- Purifying water while camping
- DIY Water Treatment Train( Instructables)
- LED UV Water Treatment
Materials for facilitating( Source: http://thesprouts.github.io/healey/sustainability-17/ )
Building water filters is a satisfying process, but something that can be easily lost in the fun of building something is thinking about how to know what the water filters you are making are designed to filter out of water and whether they work. An important distinction to make is the ability of some filters to remove particulate matter like dirt and dust (e.g. like filters in the above how-to) versus being able to filter out dangerous chemicals and bacteria (e.g. boiling or evaporating water). Talking about the difference between these two types of filtration are important, and could lead to the design of multi-step filtering processes within a group, where you first filter out particles and then boil/distill the water to remove other contaminants.
Here is a detailed how-to for building a particle filter:
Here are some other related materials, that people might want to take a look at:
Guiding questions for teams:
Building water filters is a satisfying process, but something that can be easily lost in the fun of building something is thinking about how to know what the water filters you are making are designed to filter out of water and whether they work. An important distinction to make is the ability of some filters to remove particulate matter like dirt and dust (e.g. like filters in the above how-to) versus being able to filter out dangerous chemicals and bacteria (e.g. boiling or evaporating water). Talking about the difference between these two types of filtration are important, and could lead to the design of multi-step filtering processes within a group, where you first filter out particles and then boil/distill the water to remove other contaminants.
Here is a detailed how-to for building a particle filter:
Here are some other related materials, that people might want to take a look at:
- Overview of five different DIY water filter designs and methods
- Explanation of how common water filters work
- Video walkthrough of making/testing a sand/charcoal filter
Guiding questions for teams:
- How would the creation of DIY water filters like these help address the problems around water your team has been researching?
- How did your first water filter come out? How well did it work?
- Based on your research, what does a water filter like yours filter out of water?
- What doesn’t it filter out of water?
- Where would this type of filter be useful, and where would it not be useful?
- Should someone use this filter to get sand, dirt, and other particles out of their water?
- What about if they are drinking from a stream that has bacteria and algae growing in it?
- How could you make your water filter work better? Why do you think this?
- Go test your guess from the last question and record your results here.
Flocculation
